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Date:   Thu, 28 Feb 2019 23:23:16 +0300
From:   Alexey Budankov <>
To:     Arnaldo Carvalho de Melo <>
Cc:     Jiri Olsa <>, Namhyung Kim <>,
        Alexander Shishkin <>,
        Peter Zijlstra <>,
        Ingo Molnar <>,
        Andi Kleen <>,
        linux-kernel <>
Subject: Re: [PATCH v4 03/10] perf session: define bytes_transferred and
 bytes_compressed metrics

On 28.02.2019 21:47, Arnaldo Carvalho de Melo wrote:
> Em Thu, Feb 28, 2019 at 12:02:09PM +0300, Alexey Budankov escreveu:
>> Define bytes_transferred and bytes_compressed metrics to calculate
>> comp_ratio=transferred/compressed in the end of the data collection.
>> bytes_transferred accumulates the amount of bytes that was captured from
>> the mmaped kernel buffers for compression. bytes_compressed accumulates
>> the amount of bytes that was received after applying compression to
>> move to a storage.
> Where is the code that updates these metrics? Follow up patch?

Yes, it is in [PATCH v4 07/10], specifically, record__zstd_compress() function.



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